class IUP_DROP
-- Class used to display a dropdown list or a popup menu at IUP_MATRIX. How 
-- this will be displayed depend on the IUP_MATRIX callback that will be used 
-- to append its items. See IUP_MATRIX documentation.

inherit
	IUP_WIDGET

insert
	IUP_INTERFACE

create {IUP}
   drop_widget

feature {IUP}

	drop_widget (p: POINTER)
		do
			set_widget(p)
		end

feature {ANY}

	--- Operations

	set_value (id: INTEGER)
		-- Set the list current value, id starts at 1.
		-- The default is always "1".
		require
			id >= 0
		do
			iup_open.set_int(Current, "VALUE", id)
		end

	get_previous_value: STRING
		-- The previously value in the cell where the drop is displayed.
		do
			Result := iup_open.get_attribute(Current, "PREVIOUSVALUE")
		end

	append_items (items: ARRAY[STRING])
		-- Append items at dropdown list or menu in the same order.
		local
			i: INTEGER
			s: STRING
			iterator: ITERATOR[STRING]
		do
			i := 1
			iterator := items.new_iterator
			
			from
				iterator.start
         until
				iterator.is_off
         loop
            s := iterator.item
				iup_open.set_attribute(Current, i.out, s)
				iterator.next
            i := i + 1
         end

			iup_open.set_attribute_null(Current, i.out)
		end

	set_image_at (image: STRING; id_item: INTEGER)
		-- Image to be set at the correspondent menu item.
		-- id starts at 1. Only works when the drop is displayed like
		-- a popup menu. Ignored if id is out of bounds.
		require
			valid_id: id_item > 0
		do
			iup_open.set_attribute_id(Current, "IMAGE", id_item, image)
		end

end

-- The MIT License (MIT)

-- Copyright (c) 2017, 2022 by German A. Arias

-- Permission is hereby granted, free of charge, to any person obtaining a copy
-- of this software and associated documentation files (the "Software"), to deal
-- in the Software without restriction, including without limitation the rights
-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-- copies of the Software, and to permit persons to whom the Software is
-- furnished to do so, subject to the following conditions:
--
-- The above copyright notice and this permission notice shall be included in 
-- all copies or substantial portions of the Software.
--
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-- SOFTWARE.
